what's the problem? little to load in, decent gear....unless your friends band is a major national act, soundchecks are rare. If the sound guy is good, a line check will be fine. I'm not seeing the issue at hand that has you so worked up. Seems pretty normal, especially for Nashville....except Nashville would also have, there is no free parking anywhere ($12 to park at a garage) and all drinks and food are full price, even for the band.
Anytime I can play and have minimal cartage, I'm all for it. Especially if the venue has semi-decent gear.